Machine for grinding cocks



4 Sheets-Sheet 1.

, Patented Aug. 9, 1892.

P. GERSTENKORN. MACHINE FOR GRINDING COCKS.

(No Model.)

4 Sheets-Sheet 2.

(No Model.)

P. GERSTENKORN. MACHINE FOR GRINDING 000m.

Patented Aug. 9, 1892.

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, 4 Sheets-Sheet 3. P. GERSTENKORN.

MACHINE FOR GRINDING COOKS.

Jtfar/gg (No Model.) 4 Sheets-Sheet 4.

P. GERSTENKORN.

MACHINE FOR GRINDING COCKS. No. 480,258. Patented Aug. 9, 1892.

' I Jae/5E1 Jlib1w UNITED STATES PATENT OFFICE.

PAUL GERSTENKORN, OF MILWVAUKEE, WISCONSIN, ASSIGNOR TO HIMSELF,

AND OTTO BUDDE, OF CHICAGO, ILLINOIS.

MACHINE FOR GRINDING COCKS SPECIFICATION forming partof Letters PatentNo. 480,258, dated August 9, 1892.

Application filed February 6, 1892.

To all whom it may concern.-

Be it known that 1, PAUL GERSTENKORN, a subject of the Emperor ofGermany, residing at Milwaukee, in the county of Milwaukee and State ofWisconsin, have invented certain new and useful Improvements in Machinesfor Grinding Cocks, of which the following is a specification, referencebeing had to the accompanying drawings, in which Figure 1 is a sideelevation. Fig. 2 isa top or plan view. Fig. 3 is a longitudinalvertical section on line 3 3 of Fig. 2, and Fig. 4 is a verticalcross-section on line 4 4 of Fig. 2.

My invention relates to machines for grinding the keys of cocks in theirseats; and the principal object of my invention is to provide a new andimproved machine by which a number of cocks may be groundsimultaneously, and the parts of which will be so arranged that oneoperator may easily attend to the machine.

Another object of my invention is to improve the construction andoperation of such machines in general.

I accomplish these objects as hereinafter specified, and as illustratedin the drawings.

That which I regard as new will be pointed out in the claims.

In the drawings, 1 2 indicate the side portions of the frame whichsupport the various parts ofthe machine; 3 and 4, the endportions; and5, 6, 7, and 8, legs which support the frame 1. 2 3 4.

9 1O 11 12 indicate cross-pieces extending transversely across the frameof the machine, serving to strengthen the frame and to support thevarious parts of the machine.

I prefer to use a frame constructed as above described; but I do notwish to limit myself to the exact arrangement shown.

The machine shown in the drawings is adapted to grind six cocks at atime; and it consists of six similar devices for holding and grindingthe cooks, all operated by a common driving mechanism. As the parts ofeach section are'similar, I will describe the construction and operationof a single one, it being understood that the operation of the others isthe same. The dilferentsections are also similarly numbered. A machinemay be used having any desired number of sections, as the Serial No.420,595. (No model.)

operation is entirely independent of the number of sections. Eachsection consists of the following parts:

13 indicates a sleeve which is suitably jourprojects beyond the outeredge of the bracket 14 and is provided with a cogged pinion 15, as bestshown in Figs. 1 and 4. The inner end of the sleeve 13 projects a shortdistance beyond the inner end of the bracket 14 and is provided withone-half of a clutch 16, as best shown in Fig. 4. The half-clutch 16 isadapted to slide upon a feather 17, fixed longitudinally in the sleeve13, as best shown in Fig. 4,

by which construction the half-clutch 16 may be moved longitudinallyupon said sleeve.

17 indicates a rod which is connected to the rear portion of thehalf-clutch 16, as best shown in Figs. 3 and 4, and extends downward, asshown.

18 indicates a connecting-rod mounted in suitable guides 19, supportedin the frame of the machine, which rod extends to the side 2 of theframe, beyond which it projects, where it is provided with a handle 20,as shown in Fig. 2. By moving the rod 18 transversely of the frame thehalf-clutch 16 may be shifted longitudinally upon the sleeve 13, forpurposes which will be hereinafter set forth.

21 indicates a shaft which is mounted in the sleeve 13, as best shown inFig 4, and is provided on its free end witha block 22, having a slot 23,adapted to receive the top of the cock-key. The block 22 is adj ustablysecured upon the end of the shaft 21 by means of a set-screw 24, as bestshown in Fig. 4.

The end of the shaft 21 is pointed to adapt it to serve as alathe-center for holding the cockkey.

25 indicates the half of a clutch, which half is secured upon the shaft21 by means of a 5' 27 indicates a shaft mounted in a suitable bracket28 in such manner that it will lie parallel to and opposite theshaft'21. The shaft 27 is pointed and serves as the other lathe-centerfor holding the cock-key.

29 indicates a lever mounted upon a screw 30, which is mounted in thebracket 28 and is adapted to bear against the shaft 27 to hold itinposition. By operating the lever 29 the shaft 27 maybe adjusted so thatthe distance between the lathe-centers may be regulated as desired.

31 indicates a segmental plate which is mounted at its lower end upon ashaft 32, suitably journaled in a depending portion 33 of the bracket14, as best shown in Fig. 4. The upper portion of the plate 31 is coggedto form a rack 34, as best shown in Fig. 1, which rack intermeshes withthe pinion 15, carried by the sleeve 13, as best shown in Figs. 1 and 4.By oscillating the plate 31 the pinion 15 will alternately be rotated inopposite directions, and the shaft 21 will also be similarly rotatedwhen the half-clutches l6 and are in engagement with each other. Asimilar segmental plate 31, having a rack 34, is provided for eachsection of the machine, as shown in Fig. 1, and in order that all thesegments maybe operated from a common source of power the followingapparatus is provided.

35 indicates a connecting-rod, which is pivotally connected to eachsegment 31 nearits upper end by means of pins 37 indicates a pitman, oneend of which is connected to a pin 38 upon one of the segments 31, asshown in Fig. 1, the other end being operated by an eccentric 39,mounted upon a shaft 40, which carries a band-wheel 41, as shown. Bythis construction by operating the wheel 41 all the segments 31 will berocked.

42 indicatesa swinging lever which carries the devices for holding thecock-seat, which lever 42 is pivotally mounted upon a shaft43, whichprojects from one of the cross-bars J, 10, 11, or 12, or the end-plates3 4, as best shown in Fig. 3. The shaft 43 is secured in place upon itssupporting-plate by means of a nut 44 and passes through a slot 45 inits supporting-plate, as best shown in Fig. 4. By loosening the nut 44the position of the shaft 43 upon the plate may be changed to throw thepivotal point of the lever 42 toward one side or the other of themachine, as may be necessary. The lever 42 carriesa cross-head 46, whichis arranged horizontally upon the upper end of the lever 42 and isprovided with arms 47 48 49 50, as best shown in Fig. 2.

51 indicates perpendicular brackets, one of which is mounted upon eachside of the cross-head 46, the lower end of each bracket 51 beingsecured between the arms 47 48 or 49 by means of nuts 52 53, one aboveand the other below the cross-head. By this construction the twobrackets 5l upon the cross-head may be moved toward or from each other.The upper ends of the brackets 51 are suitably hollowed out to adaptthem to receive and hold loosely an ordinary cock-seat.

The lower end of the lever 42 projects downward a considerable distancebeyond the shaft 43, and is provided on its lower end with a tappet 54,as best shown in Fig. 4.

55 indicates a pulley which is mounted upon a shaft 56, which islongitudinally mounted in suitable bearings 57 at opposite ends of themachine and extends longitudinally of the machine. The pulley 55 isoperated from the shaft 40by means of a belt or other suitable gearing.

58 indicates a cam which is mounted upon the shaft 56 and is of abouttheshape shown in Fig. 4, being approximately elliptical. The arrangementof the cam 58 is such that when rotated it will at suitableintervalsstrike the tappet 54 and cause the lower portion of the lever 42 tomovein the direction indicated by the arrow in Fig. 4, thereby throwingthe upper portion of the lever 42 and the seat carried by the brackets51 in an opposite direction. The object of this construction will bemore fully hereinafter set forth.

59 indicates a counterpoise which is connected by means of a rope orcableGO, which passes over a pulley 61, to the lower portion of thelever 42, as best shown in Fig. 4. The counterpoise thereby acts toreturn the lever 42 to its perpendicular position after the cam 58 hasmoved away from the tappet 54.

62 indicates a bar which extends longitudinally of the machine a shortdistance below and to one side of the brackets 51, as shown in part inFig. 3, which bar serves to limit the motion of the seat-supportinglevers in one direction. The rod 62 is supported upon suitable brackets63, which are adjustable, as shown by dotted lines in Fig. 4.

The operation of my machine is as follows: The seat of the cock isloosely placed in the brackets 51, carried by each cross-head 46, afterwhich a key is passed through the seat and is supported between thecenters of the shafts 21 and 27, the top of the key being fitted intothe slot 23 in the block 22. Themachine is then set in operation and therod 20 is operated to throw the half-clutches 16 and 25 into engagementwith each other. By this means the key will be alternately rotated inopposite directions in the seat and will thereby be ground to fitclosely into the seat. The cam 58 is so arranged that at suitableintervals in its rotation it will strike the tappet. 54

and move the lever 42, as hereinbefore described, thereby withdrawingthe seat from the key a short distance to bring fresh bearing-surfacesin contact with the key after the throw any one cock out of operationwithout stopping the machine, by operating the rod 20 the half-clutches16 and 25 may be thrown out of engagement with each other and thegrinding of any one cock be stopped.

By the construction herein shown the grinding devices are arrangedcompactly and are so placed and operated that a large number may becontrolled by a single operator. The sections are also practicallyindependent of each other, so far as throwing them into and out ofoperation is concerned.

64 indicates a shelf, which extends longitudinally of the machine at aheight slightly above the weights 59. When not in use, the weights maybe placed on the shelf to remove the strain from the supporting-ropes.

That which I claim as my invention, and desire to secure by LettersPatent, is-

1. The combination, with a number of seat-- supporting devices, of acorresponding number of shafts adapted to support keys in the seats,asleeve carried upon each of said shafts, mechanism for operating saidshafts from said sleeves, pinions carried by said sleeves, segmentalrack-plates intermeshing with said pinions and adapted to be oscillatedto operate said pinions, a connecting-rod connecting said rack-plates,and means for reciprocating said connecting-rod, substantially as andfor the purpose specified.

2. The combination, with a number of seatsupporting devices, of acorresponding number of shafts adapted to support keys in the seats, asleeve carried upon each of said shafts, mechanism for operating saidshafts from said sleeves, pinions carried by said sleeves, segmentalrack-plates intermeshing with said pinions and adapted to be oscillatedto operate said pinions, connecting-rod connecting said rack-plates,pitman 37, eccentric 39, and band-wheel 41, substantially as and for thepurpose specified.

3. The combination, with a key holder, means for oscillating the same,and a seatholder for holding a cock-seat upon a key, of a lever-and-cammechanism which intermittently vibrates the seat-holder and moves theseat off of and upon the key at regular intervals during the grindingoperation to present fresh surfaces of the seat to the action of theoscillating key, substantially as described.

4. The combination, with a key-holder, means for oscillating the same,and a seatholder for holding a cock-seat upon a key, ofautomatically-operating mechanism which vibrates the seat-holder andmoves the seat off of and upon the key at regular intervals during thegrinding operation to present fresh surfaces of the seat to the actionof the oscillating key, substantially as described.

5. The combination, with a key-holder and means for oscillating thesame, of a laterallyadjustable shaft 43, alever42, mounted on the shaftand provided with a cock-seat holder, a

cam operating upon the lever to intermittently vibrate the same andthereby move the cockseat off of and upon the key at regular intervalsduring the grinding operation to present fresh surfaces of the cock-seatto the action of the oscillating key, and devices for adj usting thelever-supporting shaft for the purpose of varying the lateral throw ofthe lever at seat holders, of a corresponding number of shafts forsupporting keys in the cock-seats, a sleeve carried upon each shaft,means for operating the shafts from the sleeves, pinions mounted on thesleeves, oscillating segmental rack-plates engaging the pinions, a rodconnecting the rack-plates, means for operating the rod tosimultaneously oscillate the rackplates, and a lever-and-cam mechanismwhich intermittently vibrates the cock-seat holders to move thecock-seats off of and upon the keys at regular intervals during thegrinding operation to present fresh surfaces of the seats to the actionof the oscillating keys, substantially as described.

8. The combination, with key-holding devices and means for rotating themalternately in opposite directions, of a transversely-swinging lever,means for transversely swinging said lever, seat-holding bracketscarried by said lever, and means for adjusting said brackets withrelation to each other, substantially as and for the purpose specified.

9. The combination, with key-holding devices and means for rotating themalternately in opposite directions, of a transversely-swinging lever,means for transversely swinging said lever, cross-head carried by saidlever, brackets 51, carried by said cross-head, and means for adjustingsaid brackets with relation to each other, substantially as and for thepurpose specified.

10. The combination, with key-holding devices and means for rotatingthem alternately in opposite directions, of a transversely-swinginglever, means for transversely swinging said lever, cross-head 46,carried by said lever, said cross-head having arms 47 48 49 50, brackets51, carried by said cross-head, and nuts 52 and 53 upon said brackets,substantially as and for the purpose specified.

11. The combination, with a supportingframe and seat-holding devicesmounted therein, of a sleeve mounted transverselyupon said frame, meansfor rotating said sleeve alternately in opposite directions, a shaftmounted in said sleeve, means for operating said shaft from said sleeve,and key-holding devices carried by said shaft,substantially asdescribed.

12. The combination, with a supportingframe and seat-holding devicescarried thereby, of a sleeve 13, means for rotating said sleevealternately in opposite directions, a half cluteh 16, mounted upon saidsleeve, means for operating said half-clutch 16, a shaft 21, mounted insaid sleeve, a half-clutch 25, carried thereby, means for rigidlysecuring said half-clutch 25 thereupon, and keyholding devices,substantially as and for the purpose specified.

13. The combination, with a supportingframe and seat-holding devicescarried thereby, of a sleeve 13, means for rotating said sleevealternately in opposite directions, a half-clutch 16, mounted upon saidsleeve, means for operating said half-clutch 16, a shaft 21, mounted insaid sleeve, a half-clutch 25, carried thereby, means for rigidlysecuriug said half-clutch 25 thereupon, block 22, mounted upon the endof said shaft, slot 23 in said block, and shaft 27 adj ustably mountedin the frame of the machine opposite said shaft 21, substantially as andfor the purpose specified.

14. The combination, with a supportingframe and seat-holding devicescarried thereby, of a sleeve 13, means for rotating said sleevealternately in opposite directions, a half-clutch 16,mounted upon saidsleeve, rod 17, connected to said half-clutch 16, rod18, suitablymounted in the frame of the machine, a shaft 21, mounted in said sleeve,a half-clutch 25, carried thereby, means for rigidly securing saidhalf-cluteh 25 thereupon, block 22, mounted upon the end of said shaft,slot 23 in said block, and shaft 27, adj ustably mounted in the frame ofthe machine opposite said shaft 21, substantially as and for the purposespecified.

15. The combination, with a supportingframe, of a transversely-swinginglever 42, seat-holdin g devices carried by said lever, tappet 54 on thelower end of said lever, shaft 56, cam 58, mounted thereupon and adaptedto engage the tappet 54, means for rotating said shaft 56, connterpoise59, pulley 61, cord (50, passing over said pulley and connected to thelower portion of the lever 42, a sleeve 13, having a gear-wheel 15,segmental rack-plate adapted to be oscillated to rotate said sleevealternately in opposite directions, means for oscillating saidrack-plate,half-clutch 16, carried by said sleeve and movablelongitudinally thereupon, means for moving said halfclutch, shaft2l,mounted in said sleeve,halfclutch 25, carried thereby and adapted tohe engaged by the half-clutch 16, and a shaft 27, mounted in the frameof the machine opposite and parallel to the shaft 21, substantially asand for the purpose specified.

PAUL GERSTENKORN.

Witnesses:

OTTO BUDDE, JOHN L. JACKSON.

